Charlie wrote:
IIRC, the Soviets investigated the use of giant orbital inflated
optics to make Siberia warmer. Although the concept never left the
"paper study" phase, I believe that they were on the right track.

At present, there is much discussion on global warming. There is a
vast political movement to "do something about it", based on some
computer projections that show serious consequences within a century
if some trends proceed as expected. The universal demand is to reduce
anthropogenic CO2 emmissions.

Attempting to regulate the climate by regulating the amount of
man-made greenhouse gasses released into the atmosphere is highly
inefficient. Effects of even draconian measures would take decades to
snip
Questions? Comments?

I diddn't read the details.
It is fundamentally possible to regulate insolation to earth.
However, it's probably going to be cheaper to replace fossil fueled power
stations with nuclear ones.